Portable computer



FIG. 1 is a perspective view of a portable computer showing my new design;

FIG. 2 is a front elevation thereof;

FIG. 3 is a rear elevation thereof;

FIG. 4 is a left side elevation thereof;

FIG. 5 is a right side elevation thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view showing the portable computer in a position of use.

The broken lines shown in FIG. 8 are included for the purpose of illustrating environment and form no part of the claimed design. 

The ornamental design for a “portable computer,” as shown and described. 